Relapse rates in chronic hepatitis B naïve patients after discontinuation of antiviral therapy with entecavir.

Registration studies show entecavir (ETV) to be effective and safe in NUC-naïve patients with chronic hepatitis B, but relapse rates after treatment discontinuation have not been well established. Relapse rates and predictors of relapse were evaluated in naïve HBeAg-positive and HBeAg-negative patients treated with ETV. Treatment duration was defined according to international guidelines. Virological relapse was defined as reappearance in serum of hepatitis B virus (HBV) DNA to >2000 IU/mL after discontinuation of treatment. A hundred and sixty-nine consecutive patients were treated for a median 181 weeks. 61% were HBeAg positive, 23% had cirrhosis, and mean HBV DNA level was 6.88 ± 1.74 log10 IU/mL. Ninety-two per cent became HBV DNA negative; 71% of HBeAg+ve patients became HBeAg negative and 68% anti-HBe positive; 14% became HBsAg negative and 13% anti-HBs positive. At the end of the study, 36 patients discontinued treatment: one due to breakthrough associated with resistant variants and 35 (20%) due to sustained virological response; 33 of these patients developed HBeAg seroconversion and 18 HBsAg seroconversion. Median off-treatment time was 69 weeks. Nine patients (26%), all HBeAg positive at baseline, developed virological relapse after a median 48 weeks off-treatment, 3 of them showed HBeAg reversion and 4 lost anti-HBe. No patient with HBsAg seroconversion relapsed. HBeAg clearance after week 48 of treatment was associated with an increase risk of relapse. After ETV discontinuation, HBsAg seroconversion was maintained in 100% of the patients, HBeAg seroconversion maintained in 90%, and virological relapse rate was 24%.

Breath-ammonia testing of healthy subjects and patients with cirrhosis.

BACKGROUND: Hepatic encephalopathy (HE) is a serious neuropsychiatric complication in both acute and chronic liver disease. AIMS: To establish the utility of a portable noninvasive method to measure ammonia in the breath of healthy subjects and patients with HE. METHODS: The study included 106 subjects: 44 women and 62 men, 51 healthy and 55 cirrhotic. The breath ammonia was measured with an electrochemical sensor and expressed in parts/billion (ppb). RESULTS: The breath ammonia in healthy subjects had an average value of 151.4 ppb (95% confidence interval [CI]: 149.4-153.4) and the average value in cirrhotic patients was 169.9 ppb (95% CI: 163.5-176.2) (P < 0.0001). In cirrhotic patients with and without HE, the corresponding values were 184.1 ppb (95% CI: 167.7-200.6) and 162.9 ppb (95% CI: 158.8-167.0), respectively (P = 0.0011). Ammonia levels ≥ 165 ppb permitted a differentiation between healthy and cirrhotic subjects; the area under the receiver operating characteristic (ROC) curve for the ammonia-level values in cirrhotic versus control patients was 0.86 (95% CI: 0.79-0.93). In cirrhotic patients, ammonia levels ≥ 175 ppb permitted the distinction between patients with and without HE; the area under the ROC curve in cirrhotic patients with versus without HE was 0.83 (95% CI: 0.73-0.94). CONCLUSION: A portable sensor for measuring breath ammonia can be developed. If the results of the present study are confirmed, breath-ammonia determinations could produce a significant impact on the care of patients with cirrhosis and could even include the possibility of self-monitoring.

Effectiveness of entecavir in chronic hepatitis B NUC-naive patients in routine clinical practice.

INTRODUCTION: Registration studies showed entecavir (ETV) to be effective and safe in NUC-naïve patients with chronic hepatitis B virus (HBV), but its effectiveness in routine clinical practice is unknown. MATERIALS AND METHODS: Sixty-nine HBeAg positive and negative NUC naïve chronic HBV patients were treated with ETV for 110 weeks. 63% were HBeAg positive, 16% were cirrhotics, mean HBV-DNA was 7.09 log IU/ml and mean ALT was 157 IU/ml. RESULTS: Sixty-one (88%) patients achieved undetectable DNA, with 46%, 77% and 100% virological response rates at week 24, 48 and 96 of treatment, respectively. Thirty-seven (84%) patients in the HBeAg-positive population achieved undetectable DNA, with 67% and 100% virological response rates at week 48 and 96 of treatment, respectively. Twenty-four (96%) patients in the HBeAg-negative population achieved undetectable DNA, with 91% and 100% virological response rates at week 48 and 96 of treatment, respectively. Twenty-three (53%) patients cleared HBeAg and 19 (44%) patients seroconverted to antiHBe positive status; seven (10%) patients cleared hepatitis B surface antigen and five (7%) patients developed antiHBs. At the end of the study, 10 patients successfully stopped therapy: nine HBeAg positive (four developed antiHBs positive) and one HBeAg negative. None of the patients had primary non-response. ETV resistance was not tested. None of the patients developed hepatocellular carcinoma, underwent liver transplantation or died because of liver-related events. No serious adverse events were reported. CONCLUSION: The ETV monotherapy showed high virological response rates, a favourable safety profile for NUC-naive HBeAg-positive and negative patients treated in routine clinical practice.

Disfunción hepática en el trasplante de celulas progenitoras hematopoyéticas: Impacto sobre la mortalidad / Liver dysfunction in recipients of hematopoietic stem cells: Impact on mortality

El compromiso hepático en receptores de transplante alogénico de células progenitoras hemotopoyéticas (TCPH) es una complicación muy frecuente y es responsable de la morbimortalidad precoz. La toxicidad por fármacos la enfermedad injerto versus huésped ( EICH) , la enfermedad venooclusiva (EVO) y las infecciones fúngicas, bacterianas y virales constituyen las principales etiologias. El objetivo de este estúdio retrospectivo fue estabelecer la prevalencia y etiología de la afectación hepática, evaluar el impacto en la mortalidad y analizar el valor predictivo de las transaminasas pré TCPH en la ocurrencia de EICH agudo, crônico y mortalidad. De un total de 236 pacientes transplantados, se evaluaron 82 sometidos a TCPH alogénico. El 88% de los pacientes tuvo afectación hepática: EICH agudo 40.2%, EICH crônico 15.9%, de causa indeterminada 9.8% sepsis 7.3%, toxicidad por fármacos 6.1%, EVO 3.7%, hepatitis aguda y recidiva de enfermedad 2.4%. La mortalidad evaluada al año fue 36.6%. La insuficiência hepática aguda (IHA) represento el 10% de las muertes. Las causas de IHA fueron: progresón de EICH agudo, recidiva de la enfermedad hematológica en el hígado, hepatitis herpética y EVO. El valor predictivo positivo de las transaminasas pré TCPH para EICH agudo, crônico y mortalidad fue 0.27, 0.14 y 0.43 respectivamente. No se hallaron diferencias significativas entre pacientes con pruebas bioquímicas hepáticas pré TCPH alteradas o normales en la ocurrencia de EICH agudo, crónico o mortalidad.

[When is the best time to perform upper digestive endoscopy to detect the presence of esophageal varices in patients with cirrhosis?]. / 'Cuándo sería más rentable realizar una endoscopia digestiva alta para establecer la presencia de varices esofágicas en pacientes con cirrosis?

INTRODUCTION: Variceal hemorrhage occurs in 25 to 35% of cirrhotic patients and is associated with significant morbidity and mortality and elevated hospital costs. Endoscopic exploration of gastroesophageal varices (GEV) in cirrhotic patients increases costs and involves a certain degree of invasiveness and discomfort for patients. The association between the presence of GEV and spleen size, liver function and platelet count is controversial. The aim of this study was to determine the correlation between liver function, evaluated by Child-Pugh (Ch-P) classification, platelet count (PC) and spleen volume index (SVI) with the presence of GEV in patients with cirrhosis managed in the outpatient setting. PATIENTS AND METHOD: Sixty-eight patients were included. In all patients, a medical history was taken and biochemical tests, mode B and Doppler abdominal ultrasonography, and upper digestive video-endoscopy were performed. RESULTS: A total of 76.47% of the patients were men and 23.53% were women. The median age was 52.8 12.4 years. More than half (54.41%) of the patients were Ch-P grade A, 41.18% were grade B and 4.41% were grade C. The most frequent causes of cirrhosis were alcohol in 52.95% and hepatitis C virus in 17.65%. Esophageal varices (EV) were found in 85.29% of the patients. The median SVI was 50.5 9.2 and the median PC was 150 26 x 109/L. A correlation was found between the presence of EV, SVI >or= 45 and PC < or= 100 x 109/L (r = 0.327; p = 0.006). No correlation was found between the presence of EV and Ch-P grade A. In the multivariate analysis, only the presence of EV was associated with SVI >or= 45 (OR 7.4; 95% CI, 1.30-77.7; p = 0.02). CONCLUSION: The presence of EV in cirrhotic patients managed in the outpatient setting was correlated with SVI >or= 45 and PC

[Prevalence of hepatic involvement, alcoholism, hepatis B, C and HIV in patients with background history of drug use]. / Prevalencia de afectación hepática, alcoholismo, hepatitis B, C y HIV en pacientes con antecedente de consumo de drogas.

UNLABELLED: Drug addicts frequently have liver diseases for different reasons: alcohol abuse, the drugs themselves, but more often hepatitis B and C infections. AIDS is common in this population as well and could also affect the liver directly or in the form of hepatocellular or biliary damage. We conducted this study to determine the prevalence of liver diseases, alcoholism, hepatitis B and C infections, and HIV positivity in this population. We studied a cohort of 137 persons, all with a history of drug abuse, and investigated the quantity of alcohol intake, the kind of drug used, and he routes of drug administration. RESULTS: We found liver disease in 33.6%. The prevalence of alcoholism was 65.4%, of HCV 67.3%, and of HBV 17.3%. HDV was undetectable, whereas we found HIV at a frequency of 17.3%. HCV RNA was detected in 85.4% of HCV. The drug most often used was cocaine at 90.4%, followed by marihuana at 88.3%; LSD use occurred in 17.5%. We found parenteral drug use in 43.1%. We performed 22 liver biopsies, 21 associated with HCV, and detected histological changes consistent with chronic hepatitis in 17, with cirrhosis in 4, and with hepatocellularcarcinoma in 1.

Prevalencia de afección hepática, alcoholismo, hepatitis B, C y HIV en pacientes con antecedentes de consum / Prevalence of hepatic involvement, alcoholism, hepatis B, C and HIV in patients with background history of drug use

Drug addicts frequently have liver diseases for different reasons: alcohol abuse, the drugs themselves, but more often hepatitis B and C infections. AIDS is common in this population as well and could also affect the liver directly or in the form of hepatocellular or biliary damage. We conducted this study to determine the prevalence of liver diseases, alcoholism, hepatitis B and C infections, and HIV positivity in this population. We studied a cohort of 137 persons, all with a history of drug abuse, and investigated the quantity of alcohol intake, the kind of drug used, and he routes of drug administration. RESULTS: We found liver disease in 33.6%. The prevalence of alcoholism was 65.4%, of HCV 67.3%, and of HBV 17.3%. HDV was undetectable, whereas we found HIV at a frequency of 17.3%. HCV RNA was detected in 85.4% of HCV. The drug most often used was cocaine at 90.4%, followed by marihuana at 88.3%; LSD use occurred in 17.5%. We found parenteral drug use in 43.1%. We performed 22 liver biopsies, 21 associated with HCV, and detected histological changes consistent with chronic hepatitis in 17, with cirrhosis in 4, and with hepatocellularcarcinoma in 1.

[Anti HCV in hemodialyzed patients: reduction of the prevalence and association with epidemiological variables]. / Anti HCV en pacientes hemodializados: descenso de la prevalencia y asociación con variables epidemiológicas.

In order to establish the present prevalence of HCV in hemodialyzed patients (HD) from the city of La Plata, and to know the association between the prevalence and different variables, we have studied 217 hemodialyzed patients belonged to the Hemodialysis Unit of a Public Hospital and other 7 private Units. Serological reactivity to Anti HCV and Anti HBc IgG were investigated in all of them, as well as age, sex, number of transfusions, the time under dialysis treatment, the use of erythropoietin and hepatitis episodes were taken into account. We have found a prevalence of Anti HCV of 18.4% which was significantly superior to the blood donors' prevalence (P < 0.01) and significantly inferior to the one found in 1993 in HD patients of the same city (p = 0.002). We have found an association between the presence of Anti HCV and transfusions exposure, as well as more hemodialysis time. Our results may agree with the ones that suggest the aminotransferases are not good markers for hepatocellular injuries in Anti HCV (R) HD patients.

Anti HCV en pacientes hemodializados: descenso de la prevalencia y asociación con variables epidemiológicas / Anti HCV in hemodialyzed patients: reduction of the prevalence and association with epidemiological variables

Para estabelecer la prevalencia actual de infección por HCV en pacientes hemodializados (HD) de la ciudad de La Plata y determinar su asociación con diferentes variables se estudiaron 217 pacientes con Insuficiencia Renal Crónica de una Unidad de Hemodiálisis de un Htal público y de 7 Unidades del medio asistencial privado. En la totalidad de los pacientes se investigó la presencia sérica de anti-HCV y de anti-HBc y se valoró la edad, sexo, número de transfusiones, antigüedad del tratamiento hemodialítico, uso de eritropoyetina y episodios de hepatitis. Se halló una prevalencia de anti-HCV del 18,4 por ciento significativamente superior a la de los donantes de sangre (P<0,01) y significativamente enor a la hallada en pacientes HD de la misma ciudad en 1993 (P=0,002). También se encontró que la presencia de anti-HCV se asocia con el antecedente de haber recibido transfusiones y con mayor tiempo de ento hemodialítico. Nuestro resultados parecen coincidir con los que sugieren que las aminotransferasas en pacientes HD anti HCV © son un mal marcador de lesión hepatocelular.

[Hepatocellular carcinoma: clinical and epidemiological characteristics]. / Carcinoma hepatocelular: características clinicoepidemiológicas.

We present 12 patients with CHC, 11 men and one woman, median age, 59.9 +/- 10.1 cared for in two hospitals from La Plata city. The median age, the predominance of men and presence of cirrhosis in the 75% are similar findings to European 41% of the patients, consulted of the CHC has increased in our environment. The fact that all the patients have been symptomatic at the moment of the consultation, that one of them had normal liver function tests and that only two of them had nodule of less than 5 cm of diameter, suggest advanced stage of the disease. At the same time, the median of survival of 8.3 +/- 9 (DS) months post-diagnosis and of 3.6 +/- 8 (DS) months post surgery. 90.9% had a risk factor to undergo CHC (alcohol, HBC, HCV). Because of one patient, the risk of hemodyalizer patients to have CHC is emphasized. Therefore, it is important to prevent and treat viral infections. In this study, the diagnosis of the echography was of 100% and the histologic corroboration was done by percutaneous biopsy with ultrasound or TC assessment. We observed that the levels of alpha-fetoprotein had a weak, negative correlation, not significative, with the diameters of the nodules. Although it is true that the size of the sample and the retrospective character of the investigation inhibits us to draw definitive conclusions, the behaviour of alfafetoprotein creates doubts about its value in the diagnosis and screening of the CHC.

Carcinoma hepatocelular: caracteristicas clinicoepidemiologicas / Hepatocellular carcinoma: clinical and epidemiological characteristics

Presentamos una serie de 12 pacientes con diagnóstico histológico de Carcinoma Hepatocelular (CHC), once varones y una mujer con una edad media de 59.9 años + 10.1, asistidos en 2 centros de la ciudad de La Plata. La media de edad, el predominio de varones y la presencia de cirrosis en el 75 por ciento son hallazgos similares a los de series europeas. El 41 por ciento de los pacientes consultó en el último año del periodo de observación, sugiriendo que la ocurrencia del CHC ha aumentado en nuestro medio. El hecho que todos los pacientes hayan sido sintomáticos en el momento de la conculta, que 1 sólo tenía pruebas bioquímicas hepáticas normales y que únicamente 2 tenían nódulo < de 5 cm. de diámetro, sugieren el estadio avanzado de la enfermedad. Coincidentemente las medias de sobrevida fueron de 8.3 + 9 (DS) meses post-diagnóstico y de 3.6 + 8(DS) meses post-cirurgía. El 90.9 por ciento tenía algún factor de riesgo para proceder CHC (alcohol, HBV, HCV). A raíz de un paciente hace notar el riesgo que tienen los hemodialízados de podecer CHC y se destaca la importancia de la prevención y tratamiento de las infecciones virales en ese grupo. En esta experiencia el rédio diagnóstico de la ecografía fue el 100 por ciento y la corroboración histológica se concretó mediante punción percutanea guiada por ultrasonidos o por TAC, también exitosamente y sin conplicaciones, en el 100 por ciento de los casos. Observamos que los niveles de alpha fetoproteina tuvieron una correlación negativa débil, no significativa, con los diámetros de los nódulos. Si bien es cierto que el tamaño de la muestra y el carácter retrospectivo del estudio nos inhiben para sacar conclusiones definitivos, este comportamiento de la alpha fetoproteina genera dudas sobre su valor para el diagnóstico y el catastro del CHC. En conclusión. Nuestros pacientes con CHC son similares a los de los paises europeos. Supuestamente ha aumentado la ocurrencia de CHC en nuestro medio. Los CHC de esta serie se han diagnosticado en estadio muy avanzado. Es imprescindible hacer catastros sobre los pacientes de riesgo para contraer CHC. Los hemodializados son pacientes de alto riesgo para contraer CHC. El comportamiento de la alpha fetoproteina ha generado dudas respecto de su utilidad. La ecografía ha resultado de un extraordinario valor el diagnóstico.

Anticuerpos contra el virus de la hepatitis C - anti HCV. Prevalencia e influencia sobre la morbimortalidad en los pacientes sometidos a trasplante renal, en los dos ultimos anos del programa de trasplante renal de la ciudad de la Plata / Hepatitis C viruses antibodies - anti HCV. Prevalence and their influence on the morbi-mortality in transplantation patients, in the last two years of the kidney transplantation program of the La Plata city

Se estudiaron 34 pacientes con trasplante renal (TxR), 18 varones y 16 mujeres, con el objetivo de conocer la prevalencia de Anti HCV, en este tipo de pacientes y su influencia sobre la morbimortalidad temprana. La media de segmiento fue 8.44 DS 6.7 meses y la de edad 38.32 años DS 13.97. Todos recibieron el mismo esquema inmuno-supresor y los episodios de rechazo se trataron con pulsos de metilprednisolona. Resultaron Anti HCV r (por EIA II) de Abbott e Inmunoblotting de Péptidos Sintéticos LIA TEK Organon Teknika); 7 (20.6 por ciento) pacientes y (NR) 27 (79.4 por ciento). Recibieron injerto de donante cadavérico 4 (57.1 por ciento), Anti HCV R y 10 (37.0 por ciento) Anti HCV NR; de donante vivo relacionado 3 (42.9 por ciento) Anti HCV R y 17 (63.0 por ciento) Anti HCV NR. Tenían antecedentes de haber pedacido hepatitis 6 (85.7 por ciento) de lso 7 Anti HCV R: 2 hepatitis crónicas y 4 agudas (2 HBV y 2 no B (NABV) y 6 (22.2 por ciento) de los 27 Anti HCV NR. El tiempo medio de tratamiento hemodialítico antes del trasplante en el grupo Anti HCV r fue 63.0 DS 27.0 meses y resultó significativamente superior (P<0.05) al del grupo Anti HCV (NR) (27.3 DS 20.7). Episodios de rechazos, hepatopatías post-trasplante y sobrevida del injerto y del paciente no fueron significativamente diferentes entre los pacientes Anti HCV R y los NR.

[Hepatitis C viruses antibodies. Prevalence and their influence on morbidity-mortality in renal transplant recipients, in the last two years of the kidney transplantation program in La Plata city]. / Anticuerpos contra el Virus de la Hepatitis C--anti HCV. Prevalencia e influencia sobre la morbimortalidad en los pacientes sometidos a trasplante renal, en los dos ultimos años del programa de trasplante renal de la ciudad de La Plata.

UNLABELLED: A small series of 34 renal transplanted patients (RTx) were studied, 18 males and 16 females in order to know the prevalence of Anti HCV in this type of patients and their influence on early morbi-mortality. The follow-up mean was 8.44 months SD 6.7, and Age 38.32 SD 13.97. All patients were under the same immunosuppressive scheme, and rejection episodes were treated with methilprednisolone pulses. The results were: 7 (20.6%) Anti HCV seroreactives (R) (EIA II Abbott and Immunoblotting of synthetic Peptides LIA TEK Organon Teknika); and 27 (79.4%) non-serorectives (NR), 14 patients received grafts from cadaveric donor; 4 (57.1%) Anti HCV (R), and 10 (37.0%) Anti HCV (NR). 20 patients have received grafts from lived-related donors: 3 (42.9%) Anti HCV (R), and 17 (63.0%) Anti HCV (NR). 6 (85.7%) of the 7 patients Anti HCV (R) had hepatitis history: 2 chronic hepatitis, 4 acute hepatitis (2HBV) and 2 no A no B (NANBV) and 6 (22.2%) of the 27 Anti HCV (NR). The mean time of hemodialysis treatment before transplantation in the Anti HCV (R) group was of 63.0 months SD27.0, and it was significantly superior (P < 0.05) to the Anti HCV (NR) group with 27.3 months SD 20.7. There were no significant differences between the Anti HCV (R) and (NR) patients with regard to rejection episodes, post-transplant hepatopathies, and survival of graft and patient. CONCLUSIONS: 1) Anti HCV prevalence is of 20.6%. 2) Time of hemodialysis prior to transplantation and an hepatitis history during hemodialysis came out to be significantly higher in Anti HCV (R) RTx. 3) Morbi-mortality is no modified by the presence of Anti HCV during a mean follow-up period of 8.44 months.

[Viral hepatitis infection and response to the hepatitis B vaccine in hemodialyzed patients]. / Infección por virus de hepatitis y respuesta a vacuna anti-hepatitis B en hemodializados.

Data from 219 hemodyalized patients receiving attention in our Hospital and other private centers in our city are shown. Mean age was 46.9 (range: 14-85), and 132 were male; mean time under dialysis was 20 months, and subjects received an average of 5 transfusions per patient year. Serological reactivity to HBs Ag, Anti HBs and IgG anti HBc by ELISA were investigated in all of them, and anti HCV by second generation enzimo-immunoassay (EIA II) in 73 HBe Ag/anti HBe system were determined in HBs Ag positive patients and those reactive to anti HCV (EIA II) were confirmed by LIA (immunoblotting of synthetic peptides LIA-TEK Organos Teknica). Recombinant anti HBV vaccine 40 mcg at 0-1 and six month were received by 81 cases without HBV markers in their sera and a protective response was considered when anti HBs titration of 10 mU/ml or more were obtained two months later. Prevalence for anti HBc and anti HBs were 38.8% respectively and that for HBs Ag was 21% with 78% of them reactive for HBs Ag. True reactivity for anti HCV (confirmed by LIA) was present in 35.6%, but it was 9.7% in our Hospital and 54.8% in private units (p < 0.0002). Anti HBs titration was done in 69/81 patients who received anti HBV vaccine, and a protective response in 49% were obtained; the other 12 patients underwent acute hepatitis B during the vaccination period.(ABSTRACT TRUNCATED AT 250 WORDS)

Infección por virus de hepatitis y respuesta a vacuna anti-hepatitis B en hemodializados / [Viral hepatitis infection and response to the hepatitis B vaccine in hemodialyzed patients]

Data from 219 hemodyalized patients receiving attention in our Hospital and other private centers in our city are shown. Mean age was 46.9 (range: 14-85), and 132 were male; mean time under dialysis was 20 months, and subjects received an average of 5 transfusions per patient year. Serological reactivity to HBs Ag, Anti HBs and IgG anti HBc by ELISA were investigated in all of them, and anti HCV by second generation enzimo-immunoassay (EIA II) in 73 HBe Ag/anti HBe system were determined in HBs Ag positive patients and those reactive to anti HCV (EIA II) were confirmed by LIA (immunoblotting of synthetic peptides LIA-TEK Organos Teknica). Recombinant anti HBV vaccine 40 mcg at 0-1 and six month were received by 81 cases without HBV markers in their sera and a protective response was considered when anti HBs titration of 10 mU/ml or more were obtained two months later. Prevalence for anti HBc and anti HBs were 38.8

respectively and that for HBs Ag was 21

of them reactive for HBs Ag. True reactivity for anti HCV (confirmed by LIA) was present in 35.6

in our Hospital and 54.8

in private units (p < 0.0002). Anti HBs titration was done in 69/81 patients who received anti HBV vaccine, and a protective response in 49

were obtained; the other 12 patients underwent acute hepatitis B during the vaccination period.(ABSTRACT TRUNCATED AT 250 WORDS)

Infeccion por virus de hepatitis y respuesta a vacuna anti-hepatitis B en hemodializados / Viral hepatitis infection and response to the anti B-hepatitis vaccine in hemodialyzed patients

La infección por virus de hepatitis B (HBC) y C (HCV) en hemodializados es elevada, y genera problemas epidemiológicos, aumento de la morbilidad y menores expectativas de éxito para el transplante renal; de hecho, la vacunación anti HBV es una indicación racional para este grupo de pacientes, aunque su respuesta es variable. En esta comunciación se analiza el impacto de esta problemática en nuestro medio. Se presentan 219 pacientes (132 del sexo masculino) hemodializados en nuestro hospital y unidades privadas de nuestra ciudad, con edad media de 46,9 años (R=14-85); la media de permanencia en diálisis fue de 20 meses, y la de transfusiones de 5 por ciento/años. En todos los casos se investigó por enzimo-inmunoanálisis (EIA) la presencia en suero de HBs Ag, anti HBs y anti HBc, y en 73 pacientes anti HCV por EIA II; en los casos HBs Ag positivos confirmados se determinó HBe Ag y HBe, y los anti HCV reactivos fueron confirmados por immunobloting de Péptidos Sintéticos LIA-TEK Organon Teknika. Recibieron 40 mcg de vacuna anti HBC recombinante intra deltoidea a 0,1 y 6 meses, 81 pacientes sin marcadores HBC en suero; la respuesta anti HBstitulada dos meses depués de la última dosis fue considerada protectora con títulos superiores a 10µ/ml. La prevalencia de anti HBc y anti HBs fue de 38 por ciento y la de HBs Ag de 21 por ciento; 78 por ciento de los evaluados resultaron reactivos a HBe Ag. La reactividad anti HCV se presentó en 35.6 por ciento, confirmada por LIA (9,7 por ciento en nuestro hospital y 54,8 por unidades privadas con p=0.007). Se halló niveles superiores a 10 mu/ml de anti HBs en 49 por ciento vacunados en los que se tituló el mismo. Los 12 casos restantes (14,8 por ciento) experimentaron hepatitis aguda B durante el período de vacunación...